Low-temperature-resistant high-transmittance optical adhesive and preparation method thereof

[0056] The preparation of the compound shown in the preparation example formula (I)

[0057]

[0058] Add oxalyl chloride (18.8 g) dropwise to a solution of 2-(aminomethyl)propane-1,3-diamine (11.9 g) and dichloromethane (200 mL) at 0°C under nitrogen protection, and then Add N,N-dimethylformamide (200 mL), raise to room temperature and react for 1 hour. After the reaction solution was concentrated to dryness, dichloromethane (1500 mL) was added, and (E)-6-hydroxyhexane-4-enamine (38.7 g), triethylamine (140 mL) and dichloromethane were added dropwise at 0°C In a solution of methane (1500 mL), react at room temperature for 1 hour. The reaction solution was poured into ice water, and then extracted with dichloromethane (1500 mL*2). The combined organic layers were washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated to obtain a crude product.

[0059] Oxalyl chloride (14.8 g) was added dropwise to a solution of (E)-6-amino-6-oxohexane-4-enoic ...

[0062] A low-temperature-resistant high-transmittance optical adhesive, the raw materials according to parts by weight include:

[0063] The compound represented by the formula (I) prepared in the preparation example: 60 parts;

[0064] Titanium dioxide: 5 parts;

[0065] Tripropylene glycol diacrylate: 34 parts;

[0066] Benzophenone: 0.5 parts; and

[0067] N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine: 0.5 parts;

[0068] Weigh the compound represented by formula (I) prepared in the preparation example, titanium dioxide, and tripropylene glycol diacrylate according to the above weight percentages and add them to the reaction kettle, and stir at room temperature for 2 hours; Methanone, N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionoyl]hydrazine, stirred for 1.5 hours until uniformly mixed; defoamed again using a high-speed centrifugal defoamer , the defoaming rate is 2300-2800r / min, and the defoaming time is 3-5min, and the optical adhesive is ob...

[0070] A low-temperature-resistant high-transmittance optical adhesive, the raw materials according to parts by weight include:

[0071] The compound represented by the formula (I) prepared in the preparation example: 60 parts;

[0072] Fumed silica: 5 parts;

[0073] Tripropylene glycol diacrylate: 34 parts;

[0074] Benzophenone: 0.5 parts;

[0075] N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine: 0.5 parts.

[0076] Weigh the compound represented by formula (I) prepared in the preparation example, fumed silica, and tripropylene glycol diacrylate according to the above weight percentages, add them to the reaction kettle, and stir at room temperature for 2 hours; weigh them according to the above weight percentages Benzophenone, N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine, stirred for 1 hour, until the mixture was uniform; Degassing, the degassing rate is 2300-2800r / min, the degassing time is 3-5min, and the optical adhesive is obta...